CN203141182U - Stepless gearbox machine head of numerical-control milling machine - Google Patents
Stepless gearbox machine head of numerical-control milling machine Download PDFInfo
- Publication number
- CN203141182U CN203141182U CN 201320088717 CN201320088717U CN203141182U CN 203141182 U CN203141182 U CN 203141182U CN 201320088717 CN201320088717 CN 201320088717 CN 201320088717 U CN201320088717 U CN 201320088717U CN 203141182 U CN203141182 U CN 203141182U
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- gear
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- speed gear
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Abstract
The utility model relates to a stepless gearbox machine head of a numerical-control milling machine. According to the stepless gearbox machine head, a main shaft unit and a servomotor are fixedly mounted on a shell body, the main shaft unit comprises a third transmission shaft, the servomotor comprises a first transmission shaft, a first gear is fixedly mounted on the first transmission shaft, a second high-speed gear and a second low-speed gear are fixedly mounted on the third transmission shaft, and the diameter of the second high-speed gear is smaller than that of the second low-speed gear; a second transmission shaft is mounted in the shell body in a relatively rotating manner, a second gear is fixedly mounted on the second transmission shaft, the second gear and the first gear are meshed with each other, duplicate gears are connected onto the second transmission shaft in a sliding manner and comprise a first low-speed gear and a first high-speed gear, the diameter of the first low-speed gear is smaller than that of the first high-speed gear, the first low-speed gear corresponds to the second low-speed gear, and the first high-speed gear corresponds to the second high-speed gear; and a gear shifting hydraulic cylinder is fixedly mounted on the shell body, and a shifting yoke is fixedly mounted on a telescopic rod of the gear shifting hydraulic cylinder and is connected with the duplicate gears.
Description
Technical field
The utility model relates to a kind of CNC milling machine gear-box, relates in particular to a kind of CNC milling machine section of nothing gear-box head.
Background technology
From the nC vertical milling machine invention till now, the kind of head is in constantly development and variation renewal, and a variety of technology all reach its maturity.The handpiece structure mode mainly contains three kinds at present, and first kind is to adopt electric main shaft, and main shaft and motor combine together; Second kind is to adopt band and synchronous pulley synchronously, servomotor is connected with main axle unit with synchronous pulley by synchronous band; The third be motor with main shaft between the section of the having speed change milling head that is connected by gear drive.
Adopt the mode of electric main shaft can make the milling head compact conformation, have advantages such as in light weight, that inertia is little, vibration is little, noise is low, response is fast, and rotating speed height, power are big, simplified the structure of lathe, be easy to realize the main shaft location, be a kind of ideal structure in the high-speed main spindle unit, but the characteristic of this compact structure that unites two into one and little inertia make that its output torque is less than normal, is not suitable for the high strength heavy cut; Above-mentioned second kind has characteristics such as gearratio is constant, compact conformation, tensile strength height, efficient height by synchronous band and synchronous pulley ways of connecting, but the gearratio between servomotor and main axle unit only can't effectively increase by synchronous band, this makes that just the output torque of main axle unit is less, and cutting force is less; The third adopts the gear drive ways of connecting can effectively increase gearratio, increases the output torque of main axle unit, improves cutting force, but the output torque instability, when motor speed was high, output torque was big, when motor speed hanged down, output torque was less, can only regulate by servomotor.
Summary of the invention
The purpose of this utility model provides a kind of brute force that can realize and mills the CNC milling machine section of the nothing gear-box head with heavy cut.
For achieving the above object, the technical solution adopted in the utility model is:
A kind of CNC milling machine section of nothing gear-box head, comprise housing, housing is installed with main axle unit and servomotor, main axle unit comprises the 3rd power transmission shaft, servomotor comprises first power transmission shaft, and first power transmission shaft and the 3rd power transmission shaft are parallel to each other, it is characterized in that: be installed with first gear on first power transmission shaft, be installed with second high gear and second low-speed gear on the 3rd power transmission shaft, the diameter of second high gear is less than the diameter of second low-speed gear; Be rotatably installed with second power transmission shaft in the housing relatively, be installed with second gear on second power transmission shaft, second gear is meshed with first gear, slidely connect duplicate gear on second power transmission shaft, duplicate gear comprises first low-speed gear and first high gear, the diameter of first low-speed gear is less than the diameter of first high gear, and first low-speed gear is corresponding with second low-speed gear, and first high gear is corresponding with second high gear; Be installed with the gearshift hydraulic cylinder on the housing, be installed with shift fork on the expansion link of gearshift hydraulic cylinder, shift fork is connected with duplicate gear.
The utility model adopts the secondary gear transmission mechanism of hydraulic pressure gearshift to connect servomotor and main axle unit, still can export high pulling torque when the gearshift by this continuous variable speed realizes servomotor low speed, has solved the unable difficult problem of above-mentioned lathe slow cutting.
Description of drawings
Fig. 1 is that master of the present utility model looks the sectional structure schematic diagram;
Fig. 2 is plan structure schematic diagram of the present utility model;
Fig. 3 is that the sectional structure schematic diagram is looked on a left side of the present utility model.
In the accompanying drawing:
1, second gear; 2, the 3rd power transmission shaft; 3, second power transmission shaft; 4, second high gear; 5, second low-speed gear; 6, housing; 7, main axle unit; 8, first low-speed gear; 9, first high gear; 10, first power transmission shaft; 11, first gear; 12, shift fork; 13, gearshift hydraulic cylinder; 14, servomotor.
The specific embodiment
Below in conjunction with the drawings and specific embodiments the utility model is further described:
A kind of CNC milling machine section of nothing gear-box head, as Fig. 1, Fig. 2 and shown in Figure 3, comprise housing 6, housing 6 is installed with main axle unit 7 and servomotor 14, main axle unit 7 comprises the 3rd power transmission shaft 2, servomotor 14 comprises first power transmission shaft 10, first power transmission shaft 10 and the 3rd power transmission shaft 2 are parallel to each other, be installed with first gear 11 on first power transmission shaft 10, be installed with the diameter of second high gear 4 and second low-speed gear, 5, the second high gears 4 on the 3rd power transmission shaft 2 less than the diameter of second low-speed gear 5; Be rotatably installed with second power transmission shaft 3 in the housing 6 relatively, be installed with second gear 1 on second power transmission shaft 3, second gear 1 is meshed with first gear 11, slidely connect duplicate gear on second power transmission shaft 3, duplicate gear comprises first low-speed gear 8 and first high gear 9, the diameter of first low-speed gear 8 is less than the diameter of first high gear 9, and first low-speed gear 8 is corresponding with second low-speed gear 5, and first high gear 9 is corresponding with second high gear 4; Be installed with gearshift hydraulic cylinder 13 on the housing 6, be installed with shift fork 12 on the expansion link of gearshift hydraulic cylinder 13, shift fork 12 is connected with duplicate gear.
Embodiment recited above is described preferred embodiment of the present utility model; be not that design of the present utility model and scope are limited; under the prerequisite that does not break away from the utility model design concept; common engineers and technicians make the technical solution of the utility model in this area various modification and improvement; all should fall into protection domain of the present utility model; the technology contents that the utility model is asked for protection all is documented in claims.
The utility model comprises power set (being main axle unit), servomotor and gearshift hydraulic cylinder, can realize realizing gearshift automatically by predetermined speed conditions by servo-drive system, intelligence, safety, reliable, overcome the series of malpractice of manual shift, improve operating efficiency, simplified operation, expanded the range of work of CNC milling machine, realize high pulling torque output truly, made the cutting of milling machine high strength, heavy cut become a reality.
Gearshift hydraulic cylinder in the utility model can realize realizing gearshift automatically by predetermined speed conditions that when shift fork was positioned at low-speed position, first low-speed gear and the engagement of second low-speed gear were passed to power on the main axle unit by combining with servo-drive system; When the needs main shaft ran up, the gearshift hydraulic cylinder drove shift fork to the high speed position, and first low-speed gear and second low-speed gear are thrown off, and drove the engagement of first high gear and second high gear simultaneously, had realized the gearshift of high low speed.
Because the utility model has adopted the secondary gear transmission mechanism that can shift gears, can realize the gearshift of intelligent decision high, low speed by digital control system, can effectively increase work efficiency, reduce labour intensity, expand the performance of lathe, can be widely used in products such as high-rate cutting, heavy cut CNC milling machine, machining center.
Claims (1)
1. the CNC milling machine section of nothing gear-box head, comprise housing (6), housing (6) is installed with main axle unit (7) and servomotor (14), main axle unit (7) comprises the 3rd power transmission shaft (2), servomotor (14) comprises first power transmission shaft (10), first power transmission shaft (10) is parallel to each other with the 3rd power transmission shaft (2), it is characterized in that: be installed with first gear (11) on first power transmission shaft (10), be installed with second high gear (4) and second low-speed gear (5) on the 3rd power transmission shaft (2), the diameter of second high gear (4) is less than the diameter of second low-speed gear (5); Be rotatably installed with second power transmission shaft (3) in the housing (6) relatively, be installed with second gear (1) on second power transmission shaft (3), second gear (1) is meshed with first gear (11), second power transmission shaft slidely connects duplicate gear on (3), duplicate gear comprises first low-speed gear (8) and first high gear (9), the diameter of first low-speed gear (8) is less than the diameter of first high gear (9), first low-speed gear (8) is corresponding with second low-speed gear (5), and first high gear (9) is corresponding with second high gear (4); Be installed with gearshift hydraulic cylinder (13) on the housing (6), be installed with shift fork (12) on the expansion link of gearshift hydraulic cylinder (13), shift fork (12) is connected with duplicate gear.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320088717 CN203141182U (en) | 2013-02-27 | 2013-02-27 | Stepless gearbox machine head of numerical-control milling machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320088717 CN203141182U (en) | 2013-02-27 | 2013-02-27 | Stepless gearbox machine head of numerical-control milling machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203141182U true CN203141182U (en) | 2013-08-21 |
Family
ID=48968737
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320088717 Expired - Fee Related CN203141182U (en) | 2013-02-27 | 2013-02-27 | Stepless gearbox machine head of numerical-control milling machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203141182U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105269034A (en) * | 2015-11-24 | 2016-01-27 | 沈阳景宏数控设备有限公司 | Main shaft speed change system and main shaft feeding speed change system of digital display type radial drilling machine |
| CN108971526A (en) * | 2018-09-29 | 2018-12-11 | 中山市誉胜智能科技有限公司 | Automatic gear shifting spindle box for numerical control machine tool |
| CN110860703A (en) * | 2019-12-06 | 2020-03-06 | 宁波德凯数控机床有限公司 | Octahedral contained spindle box structure for all-gear variable-speed transmission |
-
2013
- 2013-02-27 CN CN 201320088717 patent/CN203141182U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105269034A (en) * | 2015-11-24 | 2016-01-27 | 沈阳景宏数控设备有限公司 | Main shaft speed change system and main shaft feeding speed change system of digital display type radial drilling machine |
| CN108971526A (en) * | 2018-09-29 | 2018-12-11 | 中山市誉胜智能科技有限公司 | Automatic gear shifting spindle box for numerical control machine tool |
| CN110860703A (en) * | 2019-12-06 | 2020-03-06 | 宁波德凯数控机床有限公司 | Octahedral contained spindle box structure for all-gear variable-speed transmission |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130821 Termination date: 20140227 |